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Alpha frequency discrepancy and trait anxiety, activation, and inhibition in states of anxiety and mindfulness

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Authors
Pietilä, Iikka
Date
2018
Discipline
Kognitiotiede

 
Meditaatiotekniikat tarjovat laajalti mahdollisuuksia hyvinvoinnin ylläpitämiseen ja kehittämiseen sekä stressin lievittämiseen. Useat neurotieteelliset tutkimukset ovat osoittaneet välittömiä tuloksia meditatitiivisten tekniikoiden soveltamisen ja aivojen oskillatoristen mekanismien välisessä suhteessa. Meditaatiolla on osoitettu olevan myös pitkäaikaisia vaikutuksia, joihin sisältyy ahdistuneisuuden ja murheen väheneminen. Keskittymistä tukevan aivokäyttöliittymän alustavan suunnittelun tueksi tutkittiin alpha-aallonpituuden käyttäytymistä ahdistuneisuuden ja mindfulnessin tiloissa ja niiden välisiä eroja lähestyttiin aktivaatio-/inhibitio -persoonallisuuspiirteiden sekä ahdistuneisuuteen taipuvaisuuden valossa. Tutkimus toteutettiin Jyväskylän monitieteisessä aivotutkimuskeskuksessa (CIBR) MEG-laboratoriossa persoonallisuuspiirteitä ja taipumuksia mittaavia standardikyselyitä hyödyntäen. Tutkimukseen osallistui 27 koehenkilöä vuoden 2017 toisen puolikkaan aikana. Tutkimustulokset ehdottavat, että mindfulnessin ja ahdistuneisuuden tilat voidaan erottaa toisistaan. Löydökset antavat myös tukea hypoteesille, että tietyt palkitsemiseen liittyvät persoonallisuuspiirteet korreloivat alpha-aallonpituuden voimakkuuden kanssa eri tavoin erilaisissa kognitiivisissa tiloissa. Tulokset tarjoavat lisätietoa persoonallisuuspiirteiden ja alpha-aallonpituuden käyttäytymisestä erilaisissa tiloissa ja voivat edesauttaa aivokäyttöliittymän suunnittelua. Asiasanat: Kognitiivinen neurotiede, ahdistuneisuus, meditaatio, mindfulness, aivokäyttöliittymä, alpha, oskillaatio ...
 
Meditation techniques are potential tools for wellbeing improving and maintaining and stress reduction. Various neuroscientific studies show immediate results of meditative techniques influencing oscillatory mechanisms in the brain. Meditation has also been shown to have long-term effects that include overall decrease of anxiety and worry. To form a preliminary framework for developing a brain-computer inter-face system for sustained attention enhancement, the behaviour of alpha fre-quency band during states of anxiety, mindfulness and rest was studied, and the differences were juxtaposed with personality traits of anxiety, inhibition and activation. This study was conducted at the Jyväskylä Centre for Interdisciplinary Brain Research using MEG laboratory and standardised scales measuring personality traits and tendencies (BAI and BIS/BAS). The experiment was conducted on 27 subjects during the second half of 2017. Results implicate that states of mindfulness and anxiety are distinguishable from each other and from resting control state. Findings also suggest that certain reward responsiveness affiliated personality traits correlate with alpha frequency power in distinct cognitive states. Further the difference between alpha power and these states could be linked to differences in personality traits and tendencies. Results offer insight on the relation of personality traits and alpha frequency band behaviour in different cognitive states. Keywords: Cognitive neuroscience, anxiety, meditation, mindfulness, brain-computer interface, BCI, alpha, oscillation ...
 
Keywords
Cognitive neuroscience anxiety meditation mindfulness brain-computer interface BCI alpha oscillation
URI

http://urn.fi/URN:NBN:fi:jyu-201805162617

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